defining a degree of excellence Type SMP 2A Surface Mount Power Cross Protection Fuse 26-Aug-03 SMP Surface mount Power Cross Protection Fuses are primarily intended for use in telecommunication circuit applications requiring low current protection with high surge tolerance. They are typically used to replace heat coil type devices. They are designed to be placed between the line input and the surge arresting components (mov. gas tube, zenor diode, air gaps, etc.) Catalog Number Ampere Rating SMP 2 Voltage Rating 2A Typical Cold Resistance Volt-drop @100% In Melting I²T < 10 mSec Melting I²T @ 10 In (ohm) (Volt) max. (A² Sec) (A² Sec) Maximum Power Dissipation (w) 0.055 0.20 14.0 17.0 0.71 600V Consult manufacturer for other ratings These fuses will withstand transient surge currents generated by lighting in accordance with the attached table. SMP fuses guard protected circuitry against sustained overload or short circuit conditions. Such sustained overloads may be generated by accidental contact between utility cables and phone lines (power line cross). SMP Fuse are used in circuits to obtain compliance with the test requirements specified in UL 1950/60950 and Bellcore GR 1089. SURGE WITHSTAND RATINGS Voltage Peak Surge Current Maximum Rise/Duration Time Repetitions 1000V 120A 10 uS x 1000 uS 100 Pulses ( 50 Each Polarity) 2500V 500A 2 uS x 10 uS 40 Pulses ( 20 Each Polarity) 5000V 500A 2 uS x 10 uS 4 Pulses ( 2 Each Polarity) Double -exponential Impulse Waveform Electrical Characteristics (UL STD. 248-14) Power Cross (Telecom) Rating Clearing Time Limit Blow Time Testing Current 110% Minimum Maximum 4 hrs. N/A Overload Current Voltage Minimum Maximum 3A 600V 1.1 sec 900 sec 200% N/A 60 sec 7A 600V 0.4 sec 2.5sec 500% 100 msec 1.5 sec 30A 600V N/A 65 msec 1000% 30 msec 300 msec 60A 600V N/A 13 msec Current Waveform Duration Of A/B Seconds A=Rise Time=T1-T0 (1.25(b-a) B= Duration =T2-T0 (Peak Value) Ip 0.1 Ip Safety Agency Approvals Approval Standards File No. a T0 Interrupting Rating Power Factor Intended Application 60A@ 600Vac Resistive Telecom Protection Recognized File no. E20624 100A@ 125Vdc Resistive b T1 Physical specification Materials Ceramic Body / Tin Plated Brass Caps Lead Free Solder Marking On fuse: "bel", "Current Rating" General Purpose On label: Above info; "Type", "Voltage Rating", "Appropriate Safety Logos" Interrupting Rating plus " Environmental Specifications Soldering Techniques & Compatability Packaging " 2000 fuses in 13 inches dia. Reel, 16mm wide tape, 8mm pitch, per EIA standard 481 Reflow: 240°C, 30sec max. Wave Solder: 260°C, 3 sec max. Mechanical Dimensions Shock MIL-STD-202, Method 213, Test Condition I (100 G's peak for 6 milliseconds). Vibration bel 2A MIL-STD-202, Method 201 (10-55 Hz, 0.06 inch, total excursion). Salt Spray MIL-STD-202, Method 101, Test condition B (48 hrs). Insulation Resistance MIL-STD-202, Method 302, Test Condition A (After Opening) 10,000 ohms minimum. Solderability MIL-STD-202, Method 208. Resistance to solder Heat: MIL-STD-202, Method 210, Test Condition J (235°C, 30 sec) Thermal Shock MIL-STD-202, Method 107, Test Condition B (-65°C to +125°C) Operating Temperature -55°C to +125°C Specification Subject To Change Without Notice SMP Time T2 defining a degree of excellence Type SMP 2A Surface Mount Power Cross Protection Fuse SMP - TIME CURRENT CHARACTERISTIC CURVE 2A 10000 1000 TIME IN SECONDS 100 10 1 0.1 0.01 0.01 0.1 1 10 CURRENT IN AMPERES 100 1000